They say that the 5 year mark is usually when idol groups begin to falter. However, that's definitely not the case for these groups! From their debuts to now, these idol groups have endured it all � and have not showed any signs of slowing down. While blood may be thicker than water, these idols have proved they may have formed bonds that are thicker than blood � as they stand together throughout the years with the same members since debut.

Surpassing their 5 year mark, the girls of miss A are going stronger than ever with their latest lead single, "Only You." Starting from miss A, lets check out the list of 13 idol groups that have had the same members since their debuts.

ZE:A is a 9-member boy band that debuted in 2010. With the same members since debut, they released their new title track "Continue" this year and continue to form a bond.

INFINITE, a 7-member boy band formed in 2010, just made their latest comeback this year with their 5th mini-album, including the title track "Bad."

Teen Top, consisting of 6-members, made their debut in 2010 and released their latest title track "Ah-Ah" this year.

2015 marks SECRET's 6th year together with their original 4-member group this year. They released their most recent title track "I'm In Love" last year.

Rainbow is a 7-member group that debuted in 2009. We are here 6 years later, listening to their latest title track, "Black Swan."

B2ST, with their original 6-members, made their come-back this year with the single "YeY."

4minute with the original 5 members since their debut in 2009, released their title track "Cold Rain" this year, marking the first time the group has released a ballad as a single.

2NE1 debuted in 2009 with the same 4 members that performed at the latest 2015 Mnet Asian Music Awards � blessing fans with their awesome surprise performance.

SHINee debuted in 2008 with 5 members and are still going strong this year � releasing tracks such as "View" which was the most watched K-Pop music video in the world for the month.

The girls of Brown Eyed Girls debuted in 2006 with the their current 4 members. While they were relatively unknown in the beginning of their careers, they stood strong, eventually releasing hit tracks such as "Abracadabra" and making their recent comeback with their title track "Brave New World."

Big Bang, debuting in 2006 with the same 5 members, have changed the K-Pop industry with their hit titles, becoming the only idol group to win multiple MAMA Artist of the Year awards. Their latest releases in 2015 have smashed records taking number 1 on multiple charts with no signs of slowing down. Knocking down feats that many idol groups look to accomplish, Big Bang has done it all.